Just came across this site which helps people to simulate their vision problems so others (friends, family, doctors, and attorneys!) understand what they mean. Some may be relevant to MS type problems. There are various controls you can use to adjust the simulation more to how you see. I was looking at ‘ghosting’.
Thank you. Just had a look at the site - this is very useful to look at.
You have to scroll down to bottom half of screen page to find the simulators